Low-Power STDR CMOS Sensor for Locating Faults in Aging Aircraft Wiring |
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Authors: | Sharma C R Furse C Harrison R R |
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Affiliation: | Dept. of Electr. & Comput. Eng., Utah Univ., Salt Lake City, UT; |
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Abstract: | A CMOS sensor used to locate intermittent faults on live aircraft wires is presented. A novel architecture was developed to implement the Sequence Time Domain Reflectometry method on a 0.5-mum integrated circuit. The sensor locates short or open circuits on active wires with an accuracy of +/-1 ft when running at a clock speed of 100 MHz. A novel algorithm is proposed that utilizes the shape of the correlation peak to account for sub-bit delay, thus increasing the accuracy of fault location. The power consumed by the microchip is 39.9 mW |
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